diff --git a/include/dashbls/privatekey.hpp b/include/dashbls/privatekey.hpp
index beebbb05a..d02a7d292 100644
--- a/include/dashbls/privatekey.hpp
+++ b/include/dashbls/privatekey.hpp
@@ -82,6 +82,7 @@ class PrivateKey {
     // Serialize the key into bytes
     void Serialize(uint8_t *buffer) const;
     std::vector<uint8_t> Serialize(bool fLegacy = false) const;
+    std::array<uint8_t, PrivateKey::PRIVATE_KEY_SIZE> SerializeToArray(bool fLegacy = false) const;
 
     G2Element SignG2(
         const uint8_t *msg,
diff --git a/src/privatekey.cpp b/src/privatekey.cpp
index 865507dfc..d4dd32d11 100644
--- a/src/privatekey.cpp
+++ b/src/privatekey.cpp
@@ -284,6 +284,13 @@ std::vector<uint8_t> PrivateKey::Serialize(const bool fLegacy) const
     return data;
 }
 
+std::array<uint8_t, PrivateKey::PRIVATE_KEY_SIZE> PrivateKey::SerializeToArray(bool fLegacy) const
+{
+    std::array<uint8_t, PRIVATE_KEY_SIZE> data{};
+    Serialize(data.data());
+    return data;
+}
+
 G2Element PrivateKey::SignG2(
     const uint8_t *msg,
     size_t len,